Steroidal saponins from the leaves of Agave macroacantha |
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| Authors: | Jacqueline Eskander Catherine Lavaud Dominique Harakat |
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| Affiliation: | 1. Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava # 6, Zona Universitaria, C.P. 78210 San Luis Potosí, S.L.P., Mexico;2. Instituto de Investigación de Zonas Desérticas, Universidad Autónoma de San Luis Potosí, Altair # 200, Col. del Llano, C.P. 78377 San Luis Potosí, S.L.P., Mexico;3. Facultad de Medicina, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava # 6, Zona Universitaria, C.P. 78210 San Luis Potosí, S.L.P., Mexico |
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| Abstract: | A new monodesmosidic spirostanol saponin, along with three known saponins was isolated from Agave macroacantha Zucc leaves. The structure of the new saponin was established as hecogenin-3-O-α-l-rhamnopyranosyl (1→4) β-d-xylopyranosyl (1→3)[β-d-glucopyranosyl (1→2)] β-d-glucopyranosyl (1→4) β-d-galactopyranoside. The 1H and 13C resonances of the four compounds were assigned using a combination of 1D and 2D NMR techniques including 1H, 13C, COSY, TOCSY, ROESY, HSQC and HMBC NMR and confirmed by mass spectrometry. |
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